Upload A Download Artifact

Upload new download artifacts.To upload files, perform a `multipart/form-data` POST containing oneor more `files` fields: $ echo Hello World > hello.txt $ curl -s -u evzijst -X POST https://api.bitbucket.org/2.0/repositories/evzijst/git-tests/downloads -F [email protected] a file is uploaded with the same name as an existing artifact,then the existing file will be replaced.